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WO2003053355A2 - Systemes et procedes utilisant la vasoconstriction pour un traitement thermique ameliore de tissus - Google Patents

Systemes et procedes utilisant la vasoconstriction pour un traitement thermique ameliore de tissus Download PDF

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Publication number
WO2003053355A2
WO2003053355A2 PCT/US2002/040507 US0240507W WO03053355A2 WO 2003053355 A2 WO2003053355 A2 WO 2003053355A2 US 0240507 W US0240507 W US 0240507W WO 03053355 A2 WO03053355 A2 WO 03053355A2
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WO
WIPO (PCT)
Prior art keywords
probe
tissue
target tissue
agent
heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2002/040507
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English (en)
Other versions
WO2003053355A3 (fr
Inventor
Timothy G. Dietz
Stanley Levy, Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Surx Inc
Solarant Medical Inc
Original Assignee
Surx Inc
Solarant Medical Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Surx Inc, Solarant Medical Inc filed Critical Surx Inc
Priority to AU2002351397A priority Critical patent/AU2002351397A1/en
Publication of WO2003053355A2 publication Critical patent/WO2003053355A2/fr
Publication of WO2003053355A3 publication Critical patent/WO2003053355A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1485—Probes or electrodes therefor having a short rigid shaft for accessing the inner body through natural openings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/0004—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse
    • A61F2/0031—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse for constricting the lumen; Support slings for the urethra
    • A61F2/005—Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse for constricting the lumen; Support slings for the urethra with pressure applied to urethra by an element placed in the vagina
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
    • A61B2017/00238—Type of minimally invasive operation
    • A61B2017/00274—Prostate operation, e.g. prostatectomy, turp, bhp treatment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B2017/00743—Type of operation; Specification of treatment sites
    • A61B2017/00805—Treatment of female stress urinary incontinence
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
    • A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
    • A61B2018/00023—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids closed, i.e. without wound contact by the fluid
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00547—Prostate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
    • A61B2018/0231—Characteristics of handpieces or probes
    • A61B2018/0237—Characteristics of handpieces or probes with a thermoelectric element in the probe for cooling purposes

Definitions

  • the present invention generally relates to medical devices, methods, and systems. More specifically, the present invention provides techniques for improving the effectiveness of selectively heating tissues, particularly for the noninvasive treatment of urinary incontinence and hernias, for cosmetic surgery, and the like.
  • Urinary incontinence arises in both women and men with varying degrees of severity, and from different causes. In men, the condition occurs almost exclusively as a result of prostatectomies which result in mechanical damage to the sphincter, h women, the condition typically arises after pregnancy where musculoskeletal damage has occurred as a result of inelastic stretching of the structures which support the genitourinary tract.
  • pregnancy can result in inelastic stretching of the pelvic floor, the external sphincter, and most often, to the tissue structures which support the bladder and bladder neck region.
  • urinary leakage typically occurs when a patient's intra- abdominal pressure increases as a result of stress, e.g. coughing, sneezing, laughing, exercise, or the like.
  • Treatment ofurinary incontinence can take a variety of forms. Most simply, the patient can wear absorptive devices or clothing, which is often sufficient for minor leakage events. Alternatively or additionally, patients may undertake exercises intended to strengthen the muscles in the pelvic region, or may attempt behavior modification intended to reduce the incidence of urinary leakage.
  • U.S. Patent No. 5,423,811 describes a method for RF ablation using a cooled electrode.
  • U.S. Patent Nos. 5,458,596 and 5,569,242 describe methods and an apparatus for controlled contraction of soft tissue.
  • An RF apparatus for controlled depth ablation of soft tissue is described in U.S. Patent 5,514,130.
  • U.S. Patent No. 4,679,561 describes an implantable apparatus for localized heating of tissue, while U.S. Patent No. 4,765,331 describes an electrosurgical device with a treatment arc of less than 360 degrees.
  • An impedance and temperature generator control is described in U.S. Patent No. 5,496,312.
  • Bipolar surgical devices are described in U.S. Patent Nos. 5,282,799, 5,201,732, and 728,883.
  • the present invention enhances the effectiveness of treatment of support tissue structures.
  • tissue structures support organs and hold the organs in their proper position for appropriate functioning.
  • tissue structures become weak, hyper-elastic, and/or excessively lengthy, the organs of are no longer supported in their proper position. This often leads to physical manifestations such as incontinence, hernias, and the like.
  • Remedies often involve thermal treatment of the support tissue structures, such as thermally inducted controlled shrinkage, contraction, or stiffening of the support tissue structure.
  • vasoconstrictive agents are used.
  • Methods of treating a hyperextended support tissue of a patient body by shrinkage or contraction typically comprises electrically coupling a first electrode and a second electrode to the tissue. An electrical potential is applied across the electrodes while controlling the separation distance between the electrodes. As a result of the separation control, an electrical current within the tissue heats and shrinks the tissue to a more desirable length. Tissue contraction results from the heating by affecting the collagen molecules of the tissue, specifically heat-induced uncoiling and repositioning of the collagen ⁇ -pleated structure. Typically, the tissue is heated to between about 60°C and 110°C, often being between about 60°C and 80°C. This will generally effect a shrinkage of the target tissue in at least one dimension of between 20 to 50 percent.
  • heating energy will be applied for a period of from 30 seconds to 5 minutes. These heating times will vary with the type and arrangement of electrodes used. The total amount of energy delivered will depend in part on which tissue structure is being treated, how much tissue is disposed between the target tissue and the heating element, and the specific temperature and time selected for the protocol. The power delivered will often be in the range from 10W to 100W, usually being about 30W. The temperature will usually not drop instantaneously when the heating energy stops, so that the tissue may remain at or near the therapy temperature for a time from about 10 seconds to about 2 minutes, and will often cool gradually back to body temperature. [16] A variety of devices and methods may be used to provide resistive heating to support tissues.
  • a probe comprising a shaft having a proximal end, a distal end, and first and second electrodes disposed near the distal end of the shaft. These electrodes are simultaneously engageable against the tissue or fascia and are separated by a predetermined distance which limits depth of tissue heating.
  • a handle is typically adjacent to the proximal end of the shaft for manipulating the electrodes from outside the patient body.
  • 6,156,060 (Attorney Docket No. 017761 -000910US) is directed to static devices and methods to shrink tissues for incontinence. These patents are assigned to the present assignee, and their full disclosures are incorporated herein by reference. [17] In some instances, it is desired to direct electrical energy through an intermediate tissue to a targeted portion of fascia. To avoid thermal injury to the intermediate tissue, cooled plate electrodes are used. Such a cooled plate electrode is capable of directing electrical energy through an intermediate tissue and into fascia while the cooled electrode prevents injury to the intermediate tissue. In some embodiments, a pair of electrodes having large, substantially planar tissue engaging surfaces are aligned substantially parallel to each other with the fascia and adjacent tissues disposed therebetween.
  • the surfaces of the electrodes which engage the tissue are cooled by a cooling system.
  • the cooling system typically includes a conduit through the electrode for the circulation of cooling fluid, but may optionally rely on thermoelectric cooling or the like. Ideally, the cooling system cools an arc which extends beyond the energized electrode surfaces to prevent any hot spots adjacent the tissue surface, and to maximize the heat removal from the tissue without having to resort to freezing the tissue.
  • Embodiments of such devices and methods are provided in U.S. Patent No. 6,081,749 (Attorney Docket No. 017761 -000320US) which generally describes noninvasive devices, methods, and systems for shrinking of tissues, often by cooling a surface of an intermediate tissue and directing energy through the cooled intermediate tissue to the target tissue so as to effect shrinkage.
  • Methods of treating a weak or overly elastic support tissue of a patient body may be achieved by stiffening the tissue or increasing its modulus of elasticity.
  • the increase in modulus can be affected by directing sufficient energy into the facial tissue so as to promote the formation of scar tissue.
  • the resulting scar tissue is generally significantly less elastic than the original fascia, and may also have an increased thickness either as a result of facial shrinkage or from the proliferation of scar tissue and/or smooth muscle cells.
  • This local increase in modulus of the scarred support tissue can transfer stress and strain from the area of treatment to adjoining areas, and may also shortened the response time of the tissue plane to stress pulses such as those which might result in incontinence events.
  • Such scarring will preferably be promoted by directing energy into the fascial tissue so as to injure the fascial tissue without ablating the fascial tissue. While such energy can be delivered in the form of ultrasound, microwave, laser or thermal conduction, it will preferably be in the form of an arc of current conducted through the tissue so that the tissue's impedance effects heating. Heating the fascial tissue to a temperature about 45 °C or more is sufficient to promote the formation of scar tissue and thereby decrease elasticity. Hence, elasticity can be reduced by heating the tissue below the temperatures generally used to effect contraction or shrinkage (typically over about 60°C). These lower tissue temperatures can significantly reduce collateral damage, particular where the elasticity of the tissue is reduced without significant shrinkage. Embodiments of such devices and methods are provided in U.S.
  • Patent No. 6,292,700 (Attorney Docket No. 017761-001810US) which is assigned to the present assignee, and its full disclosure is incorporated herein by reference.
  • elasticity reduction and shrinking represent two distinct structural alterations to the tissue system, they may be applied independently or in selective combinations so as to provide the desired change in structural support.
  • the above described devices and methods have been designed to minimize collateral damage imposed on the treated and adjacent tissues during therapy, additional safeguards and improvements in therapy are desired.
  • the present invention provides methods and systems for counteracting these natural cooling effects with the use of vasoconstricting agents.
  • Vasoconstricting agents cause the smooth muscle cells of arteries to contract and decrease the vessel radius. This diminishes the flow volume and tissue contact area of the blood in the region being heated thus decreasing the effectiveness of blood flow as a heat sink. This allows the target tissue to be heated to the desired therapeutic effect with less power applied. This in turn reduces the need to increase energy from the probe which may cause undesirable heating and damage to intervening surface tissue.
  • Fig. 1 illustrates the bladder of a urinary stress incontinent patient wherein the bladder has dropped from its nominal position.
  • FIG. 2 illustrates a method step of inserting a vasoconstrictive agent into the vagina of a patient.
  • FIG. 3 illustrates the period of absorption of the vasoconstrictive agent.
  • Fig. 4 is a perspective view of a tissue contraction probe which may be used in conjunction with the methods of the present invention.
  • Fig. 5 illustrates the probe of Fig. 4 positioned within the vagina to treat the target tissue.
  • FIG. 6 A is a perspective view of a tissue contraction probe and an attached guide shaft which may be used in conjunction with the methods of the present invention.
  • Fig. 6B illustrates the guide shaft and probe of Fig. 6 A positioned within the urethra and vagina respectively to treat the target tissue
  • Fig. 7 is a perspective view of a bladder probe and a vaginal probe which may be used in conjunction with the methods of the present invention.
  • Fig. 8 illustrates the probes of Fig. 7 positioned with the bladder and vagina respectively to treat the target tissue.
  • FIG. 9 illustrates the bladder of Fig. 1 after treatment wherein the bladder has been raised.
  • Fig. 10 illustrates a kit constructed in accordance with the principles of the present invention.
  • cystocele a posterior portion of the bladder protrudes into the vagina
  • enterocele a hernial protrusion through a defect in the rectovaginal or vesicovaginal pouch
  • rectocele prolapse or herniation of the rectum
  • utero vaginal prolapse downward movement of the uterus so that the cervix extends into or beyond the vaginal orifice
  • hernia portion of the stomach protrudes through an enlarged esophageal hiatus of the diaphragm
  • inguinal or abdominal hernia portion of the small intestine protrudes through the inguinal canal
  • Pelvic support tissues generally maintain the position of the urinary bladder B in its proper position.
  • the endopelvic fascia EF is one of the pelvic support tissues which helps to maintain such position.
  • the endopelvic fascia EF defines a hammock-like structure which largely defines the pelvic floor.
  • the bladder In women with urinary stress incontinence due to bladder neck hypermobility, the bladder has typically dropped between about 1.0 and 1.5 cm or more below its nominal position. This condition is typically due to weakening of the pelvic support structures, including the endopelvic fascia and the surrounding ligaments and muscles. Referring to Fig. 1, the bladder B can be seen to have dropped from it's nominal position (shown in phantom by outline 36).
  • a momentary pulse P opens the bladder neck N resulting in a release through urethra UR.
  • a pulse P may result from sneezing, coughing, laughing or exercising wherein the abdominal pressure increases momentarily.
  • the present invention provides a therapy which enhances the effectiveness of heat treatments which apply heating to shrink the length of a target tissue or support tissue and return the bladder B to its nominal position.
  • the target tissue is the endopelvic fascia EF to which heat is applied to effect such shrinkage and repositioning.
  • the patient is admitted to an ambulatory surgery setting 1-2 hours before surgery. At this time, as shown in Fig.
  • a vasoconstrictive agent 200 is inserted into the vagina V and applied to the vaginal mucosa VM on the anterior vaginal wall medially at the urethra UR and extending laterally from both sides of the urethra UR.
  • One possible agent comprises epinephrine.
  • This is typically provided in a solution comprising water, saline or other liquid, optionally also containing an anesthetic agent, such as lidocaine, or any other additional additive.
  • the solution typically has a concentration of 1 mg agent (such as epinephrine) per 50 ml solution but may range from approximately 1 mg agent per 25 ml solution to 1 mg agent per 200 ml solution.
  • any suitable vasoconstrictive agent may be used in any concentration.
  • the agent may be provided in forms other than in solution, such as in a paste or other form.
  • the agent 200 may is then applied to a carrier 202, such as a gauze pad, which is held against the anterior wall. [37] As shown in Fig. 3, the agent 200 and carrier 202 may be held in place by packing the vagina V with additional material 204, such as additional gauze.
  • the agent 200 is left in place for a period of time to allow absorption of the agent 200 through the vaginal surface tissues and into the vaginal mucosa VM, as illustrated by arrows, to a desired depth of approximately 10-15 mm. The time required for such absorption is typically 30-40 minutes but may range from 15 minutes to 1 hour.
  • Absorption may be assisted by a variety of methods.
  • the ionized vasoconstrictive agent 200 and target tissue may be electrically stimulated. This causes the vasoconstrictive agent 200 to be absorbed by iontophoresis.
  • ultrasonic stimulation may assist the absorption of vasoconstrictive agent 200 into the target tissue.
  • the vasoconstrictive agent 200 may be injected directly into the target tissue using a needle/syringe system.
  • one or more vasoconstrictive agents may be delivered and/or absorbed into the vaginal mucosa VM or target tissue by a variety of methods other than by the methods illustrated in Figs. 2-3.
  • the target tissue forms a vasoconstricted target tissue and will be denoted by shading.
  • the heating energy will typically be applied using an electrode capable of delivering radiofrequency (RF) energy directly against the supporting tissues in a monopolar or bipolar manner.
  • RF radiofrequency
  • One or more electrodes are typically disposed on one or more probes.
  • Such probes will be substantially rigid and appropriately sized and shaped to be positionable so that the electrodes are placed near the target tissue.
  • the probe may be sized and shaped to have a length between approximately 4 cm and 8 cm and have a width or diameter between approximately 1.5 cm and 3.0 cm.
  • the probes may be composed of a plastic (such as polyester, polycarbonate, or the like) or an inert metal (such as gold plated brass, or the like), or other biocompatible materials that are typical of intravaginal devices.
  • the electrodes can take a variety forms, including curved electrodes. It should be appreciated that any number of electrodes and a variety of shaped electrodes can be used. A description of various types of electrodes that can be used with the devices and methods of the present invention are shown and described in commonly assigned U.S. Patent No. 6,091,995, the complete disclosure of which is incorporated herein by reference. Further, a power supply may be used that is in electrical communication with the electrode assembly though electrical couplings.
  • a controller may be incorporated into the probe or the power supply to control the delivery of energy to the heating electrodes.
  • Some exemplary controllers are described in commonly assigned U.S. Patent No. 6,081,749, the complete disclosure of which is incorporated herein by reference.
  • the devices, systems and methods of the present invention can rely on other energy sources, such as microwave, light (laser) energy , electrical resistance heating, the delivery of heated fluids, the focusing of ultrasound energy, or any other known energy delivery technique which can be targeted to specific tissue and raise the tissue temperature to the desired range.
  • tissue contraction is achieved by delivery of energy from a single probe. Referring to Fig.
  • tissue contraction probe 10 used to deliver RF energy is shown to include a shaft 12 having a proximal end 14 and a distal end 16.
  • First and second electrodes 18, 20 are disposed near distal end 16 of shaft 12, while handle 22 is disposed at the proximal end of the shaft.
  • a switch 24 applies a radiofrequency electrical potential across first and second electrodes 18, 20 to effect gentle resistive heating of electrically conductive tissues which span these electrodes.
  • tissue heating temperatures will be measured directly using a temperature sensor mounted on the probe between the first and second electrodes 18, 20, or separately inserted into the tissue via an ultrasonically or ffuoroscopically guided temperature probe.
  • tissue temperature, contraction and the like may be determined indirectly by monitoring the electrical characteristics of the tissue itself.
  • the probe 10 and vagina V are lubricated with electroconductive gel and the probe 10 is introduced to the vagina V.
  • the probe 10 is positioned to treat the vasoconstricted target tissue lateral to one side of the urethra UR. If applicable, a temperature probe is then deployed from the probe tip to monitor the temperature of the vasoconstricted target tissue. Heating energy is then applied to the tissue, in this example by delivery of RF current by the probe 10, to cause resistive heating. RF energy is removed when either the target tissue temperature reaches the desired temperature or the maximum treatment time is reached.
  • a tissue contraction probe 110 used to deliver RF energy is shown.
  • the probe 110 includes an applicator or probe body 112 having a proximal portion 114 and a distal portion 116.
  • Proximal portion 114 of the probe body 112 generally includes a handle 115 and a trigger or switch 117 for activating a delivery of electrical energy to the target tissue or for deploying a temperature probe into the target tissue to monitor the tissue temperature during treatment.
  • Distal portion 116 includes a treatment surface 118 that has at least one electrode or other type of treatment assembly, such as an electrode on a needle, ultrasound transducer, microwave antenna, or needle for delivery of a therapeutic agent (not shown).
  • a guide body or shaft 122 can be attached to the probe body 112 to assist in the proper positioning of the distal portion 116 of probe body 112 and treatment surface 118 with a target tissue.
  • the probe body 12 is configured to be insertable in a first body orifice while guide shaft 122 is configured to be inserted into a second body orifice so as to accurately position the probe body 12 and electrodes 118 adjacent a target tissue in the first body orifice.
  • guide 122 can properly position electrodes 118 so that they are offset laterally from a sensitive non-target tissue. For example, as illustrated in Fig.
  • the guide shaft 122 may be positioned into a patent's urethra UR while the probe body 112 is inserted into the patient's vagina V.
  • the urethral guide shaft 122 has a diameter and length so that an expansible member 142 disposed near a guide tip 141 is positionable and inflatable within the bladder B.
  • Such positioning of the expansible member 142 holds the guide shaft 122 in position and therefore holds the rigidly attached probe body 112 in a relative position.
  • Such configuration can prevent inadvertent delivery of electrical energy to the non-targeted tissue, such as the bladder or urethral tissue.
  • Exemplary embodiments of the tissue contraction probe 110 and guide shaft 122 are further described in commonly assigned U.S. Patent Application Patent (Attorney Docket No. 017761-002600US), the complete disclosure of which is incorporated herein by reference.
  • the system 40 includes a vaginal probe 42 and a bladder probe 44.
  • the vaginal probe 42 has a proximal end 46 and a distal end 48.
  • Electrode 32 (including segments 32a, 32b, 32c and 32d) is mounted near the distal end of the probe.
  • Vaginal probe 42 will typically have a diameter of between about 2 and 4 cm, and will often have a shaft length of between about 6 and 12 cm.
  • An electrical coupling 50 is couplable to an RF power supply, and optionally to an external control processor. Alternatively, a controller may be integrated into the probe itself.
  • a fluid coupling 52 provides attachment to a cooling fluid system. Cooling fluid may be recycled through the probe so that more than one fluid couplers may be provided.
  • the segments of electrode 32 are quite close to each other, and preferably define a substantially flat electrode surface 54. The cooling fluid flows immediately below this surface, the surface material preferably being both thermally and electrically conductive. Ideally, surface 54 is as large as the tissue region to be treated, and a thermocouple or other temperature sensor may be mounted adjacent the surface for engaging the tissue surface and measuring the temperature of the engaged tissue.
  • Urethral probe 44 includes a balloon 56 supporting a deployable electrode surface.
  • the endopelvic fascia will preferably be disposed between the electrodes of the urethral probe 44 and vaginal probe 42.
  • Balloon 56 of urethral probe 44 is here illustrated in its expanded configuration, thereby maximizing a surface area of electrode 34, and also minimizing its curvature.
  • cooled fluid recirculating through balloon 56 will cool electrode 34, so that cooled electrodes 32, 34 will selectively heat the endopelvic fascia EF without damaging the delicate vaginal mucosa VM or the bladder wall.
  • Urethral probe 44 and vaginal probe 42 may optionally be coupleable to each other to facilitate aligning the probes on either side of the target tissue, either mechanically or by some remote sensing system.
  • one of the probes may include an ultrasound transducer, thereby facilitating alignment of the electrode surfaces and identification of the target tissue.
  • the proximal ends of the probes may attach together to align the electrodes and or clamp the target tissue between the probes.
  • vasoconstrictive agents 200 reduces the possibility of undesirable heating and damage to intervening tissues.
  • the vasoconstricting agents 200 cause the smooth muscle cells of arteries with the tissue to contract and decrease in size. This diminishes the flow volume and tissue contact area of the blood in the region being heated thus decreasing the effectiveness of blood flow as a heat sink. This allows the target tissue to be heated to the desired therapeutic effect with less power applied.
  • Fig. 9 illustrates positioning of the bladder B after treatment by the above described methods.
  • the bladder B can be elevated from its lowered position (shown by dashed outline 38).
  • a pressure pulse P is resisted in part by endopelvic fascia EF, which supports the lower portion of the bladder and helps maintain the bladder neck N in a closed configuration, hi fact, fine-tuning of the support provided by the endopelvic fascia is possible through selective contraction of the anterior portion of the endopelvic fascia to close the bladder neck and raise bladder B upward.
  • lateral repositioning of bladder B to a more forward position may be effected by selectively contracting the dorsal portion of endopelvic fascia EF.
  • the treatment may be tailored to the particular weakening exhibited by a patient's pelvic support structures.
  • kits 500 comprise at least a vasoconstrictive agent 200 and instructions for use IFU.
  • the kits may further include one or more of any of the other system components described above, such as a probe 502, an additional probe 504 for use alone or in conjunction with probe 502, a guide 506, a carrier 202, additional material 204 and a needle 508 and syringe 510, to name a few.
  • the instructions for use IFU will set forth any of the methods as described above, and all kit components will usually be packaged together in a pouch 520 or other conventional medical device packaging.
  • kit components such as a probe 502 which will be used in performing the procedure on the patient will be sterilized and maintained within the kit.
  • separate pouches, bags, trays or other packaging may be provided within a larger package, where the smaller packs may be opened separately to separately maintain the components in a sterile fashion.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Urology & Nephrology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
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  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Vascular Medicine (AREA)
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  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Prostheses (AREA)

Abstract

L'invention concerne un procédé améliorant l'efficacité de traitement de structures tissulaires de support. En général, des structures tissulaires supportent les organes et maintiennent lesdits organes dans une position convenable pour un fonctionnement approprié. Lorsque lesdites structures tissulaires deviennent faibles, hyper élastiques, et/ou s'allongent de manière excessive, lesdits organes ne sont plus supportés dans la position qui convient. Cela entraîne souvent des manifestations physiques tels que l'incontinence, des hernies, etc. Des remèdes impliquent souvent un traitement thermique desdites structures tissulaires de support, tel que le rétrécissement contrôlé induit thermiquement, la contraction, ou le renforcement de ladite structure tissulaire de support. Afin d'améliorer ledit traitement thermique et de diminuer la possibilité d'un chauffage non souhaité et d'endommagement des surfaces tissulaires adjacentes, on utilise des agents vasoconstricteurs.
PCT/US2002/040507 2001-12-20 2002-12-17 Systemes et procedes utilisant la vasoconstriction pour un traitement thermique ameliore de tissus Ceased WO2003053355A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002351397A AU2002351397A1 (en) 2001-12-20 2002-12-17 Systems and methods using vasoconstriction for improved thermal treatment of tissues

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/029,000 US6840954B2 (en) 2001-12-20 2001-12-20 Systems and methods using vasoconstriction for improved thermal treatment of tissues
US10/029,000 2001-12-20

Publications (2)

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WO2003053355A2 true WO2003053355A2 (fr) 2003-07-03
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US6840954B2 (en) 2005-01-11
AU2002351397A1 (en) 2003-07-09
WO2003053355A3 (fr) 2003-09-25
US20030120326A1 (en) 2003-06-26
AU2002351397A8 (en) 2003-07-09

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